Here is a few I would like to recommend myself. I apologize if you have any of these games already.

Ys: The Oath in Felghana ($15) - A really fun Action RPG & its fairly quick on getting you to the game play. Its is about 10-15 hours to complete.

Corpse Party ($20) - I know some are going to call a fanboy for putting this here. Especially because of of my current avatar. But I swear I'm not. If anything, I am more of a Falcom fanboy recently. But anyway, the is writing is great. Like everyone said already its more of Visual Novel with light Adventure elements to it.

Wild Arm 2 ($6) - If you willing get pass it being really easy. Then I highly recommend this. This is my most favorite out of the three Wild Arms games I play.